Napoleon gill



' (No Model.)

N. GILL.

CUTTING PLIERS.

Patented Apr. 28, 1885.

.INW BY%v d/% WITNESSES:

ATTORNEY UNITED Starts *r tribe.

NAPOLEON GILL, OF HOLYOKE, MASSACHUSETTS, ASSIGNOR OF ON E-THIRD TO THOMAS VW'IWANN, OF SAME PLACE.

CUTT lNG-PLIERS.

SPECIFICATION forming part of Letters Patent No. 316,452, dated April 28, 1885.

Application filed February 21, 1884. Renewed September 22, 1884. (No model.)

' lowing is a specification.

This invention relates to improvements in cutting-pliers, the object being to provide an improved tool of this class in which the cutting-jaws are more powerfully actuated than in pliers of ordinary construction, whereby the tool is adapted to out large metal rods and articles, and also to provide pliers whose cutting-jaws are adapted to be adjusted to open more or less independent of a movement of the handles, and in which the lever-power increases as the jaws ap'proacheaeh other.

In the drawing forming part of this specification is illustrated a pair of pliers embodying my invention.

In the drawing, B is one of the handles of the pliers, having a cuttingjaw, o, thereon, which handle and jaw are made in a similar manner to ordinary pliers, but about at the point on the handle B where the two parts of ordinary pliers are pivoted one to the other is hung the jaw-arm 0, so that it may have a vibratory motion. This arm 0 has formed on its free end the second cutting-jaw, 1), whose edge is opposite the aforesaid jaw 12. Aspring, d, is secured by one end to the outside of the handle B, and extends between that part of the arm 0 adjoining handle B and the latter, and is bent forward and made to bear on the inner side of arm 0 to swing jaw o away from jaw 1). Two links,e e,are pivoted by one end at m to the arm 0 just back of jaw 12, one on each side of said arm. The front link is partly broken away to show the second one back of it. The part of the handle B just back of the jaw 11 passes between the two links 6 e. The ends of the links 6 opposite to the pivot :0 are pivoted to the end of a lever, A, at :0 thereon, one end on each side, as on arm a. A screw, w, passes through the lever A, and its lower end is seated in a recess in the curved part of handle B just back of the jaw '11, and its rounded point constitutes a fulcrum on which lever A swings. The screw to is adjustable by turning it in or out, whereby the distance between the jaws o c is increased orv diminished, the lever A being the while in one position.

In using these pliers great cutting-power is obtained, owing to the attachment of the links 6 6 near the jaw c on arm 0, and to the location of the fulcrumscrew w so near the pivotpoint .00 on lever A, whereby a short lever and a very long one are made to act by ap- 6o proaching lever A and handle B, as shown in dotted lines in the drawing. The dotted lines at the right of the links 6 and on the leverA show the position of the upper ends of the links 6, their pivot 00", and the fulcrum-screw w when the long arm of the leverA is brought near to or against the handle B, and when screw to is in the dotted-line position and the pivot 00 is swung to a position more nearly over the bearing-point of the screw on handle B the lever-power of lever A is considerably more than before drawing the lever and handle together, and therefore when, in cutting a rather thick bar, the jaws have entered the latter and the greatest cutting resistance comes, the above-named lever, pivot, and fulcrum parts gradually assume positions which in a great measure aid in counteracting the said resistance. If the swing of the arm 0 on handle B be free, the jaw 12 will drop away from jaw 12 when lever A is moved away from the handle, and under these conditions the spring d may, if desired, be dispensed with.

What I claim as my invention is- 1. Improved cutting-pliers consisting of a handle, B, having thereon one of the cuttingjaws, an arm pivoted to said handle near its jaw, having on its free end the second cuttingj aw, a lever having its fulcrum bearing upon the handle near its jaw, and connected by piv- 93 oted links with said pivoted arm, and a spring to swing the jaw of the latter away from the jaw on the handle, combined and operating substantially as set forth.

2. Improved cutting-pliers consisting of a 95 handle, B, having thereon one of the cuttingjaws, an arm pivoted to said handle near its jaw, having on its free end the second cuttingjaw, a lever having its fulcrum bearing upon I jaw, and connected by pivoted links with said 10 the handle near its jaw, and connected by pivpivoted arm,and aspri'ng to swing the jaw of the oted links with said pivoted arm. latter away from the jaw on the handle, com- 3. Improved cutting-pliers consisting of a bined and operating substantially as set forth. handle, B, havin thereon one of the cuttin r 5 javvs,an armpivot edtosaid handlenearitsjavv, NAPOLEON GILL having" on its free end the second cutting-java Vitnesses: lever having an adjustable fulcrum,an(lhaving WM. H. CHAPIN, its fulcrum bearing upon the handle near its H. H. BOWMAN. 

